GitLab CI build fails because of missing step

When I read the error message in the last build correctly, the protocol files (which are not included in the package) are not downloaded before the tests are run and, hence, the tests fail.

Running bin/bob_dbmanage.py ijba download before running tests should solve that issue. Yet, I am not familiar with the GitLab CI interface, so I assign this issue to @amohammadi (feel free to assign it further).